397963056 has 160 divisors (see below), whose sum is σ = 1149926400. Its totient is φ = 118056960.

The previous prime is 397963051. The next prime is 397963073. The reversal of 397963056 is 650369793.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a junction number, because it is equal to n+sod(n) for n = 397962996 and 397963014.

It is not an unprimeable number, because it can be changed into a prime (397963051) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1084185 + ... + 1084551.

It is an arithmetic number, because the mean of its divisors is an integer number (7187040).

Almost surely, 2^397963056 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 397963056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (574963200).

397963056 is an abundant number, since it is smaller than the sum of its proper divisors (751963344).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

397963056 is a wasteful number, since it uses less digits than its factorization.

397963056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 467 (or 461 counting only the distinct ones).

The product of its (nonzero) digits is 918540, while the sum is 48.

The square root of 397963056 is about 19949.0114040771. The cubic root of 397963056 is about 735.5534763967.

The spelling of 397963056 in words is "three hundred ninety-seven million, nine hundred sixty-three thousand, fifty-six".